Win7 The telnet command is not installed by default, Microsoft should do so for security reasons. So how do you use Telnet service in Windows 7 systems?
1, Installation: Click "Start" → "Control Panel" → "Program", "in the program and function" to find and click "Turn on or off Windows features" into the Windows Feature Settings dialog box. Locate and tick the Telnet client and Telnet server, and finally "OK" for a moment to complete the installation.
2, start the service: "Start" → "Run", enter Services.msc Open Service Manager. Locate and double-click the Telnet service entry to set it to start as manual (more secure, only enabled when needed), and finally "start" the service "OK" to exit.
3, Hidden reason: In fact, the service Manager can not find Telnet is not Windows 7 abandoned Telnet, but the default state of Windows 7 does not have the Telnet service installed. This is the first time Microsoft has removed Telnet from the system default component from a personal system, similar to Windows Server 2008. After all, the data in Telnet is transmitted in clear text, and attackers and easy access to sensitive information through sniffing. Based on security considerations, it is recommended that you use a more secure, encrypted SSH remote management approach.